Furnace for heating chain-links



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FURNAOE FUR HEATING CHAIN LINKS. N0.` 502,594.

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P. H. STANDISH. FURNACE FOR HEATING CHAIN LINKS,

No. 502,594. Patented Aug. 1, 1893'.

UNITED STATES 4PATENT OFFICE.

PI-IILANDER H. STANDISH, OF ST. MARYS, OHIO.

FURNACE FOR HEATING CHAIN-LINKS.

SPECIFICATION forming part of Letters Patent No. 502,594, dated August1, 1893. Application filed May 20,1892. Serial No. 433,785. (No model.)

I To @ZZ whom it may concern:

Beit known that l, PHILANDER H. STANDIsH, acitizen of the United States,residing at St. Marys, in the county of Auglaize and State of Ohio, haveinvented certain new and useful Improvements in Furnaces forHeatingChain- Links, Rings, and Like Articles for Welding or Forging, of whichthe following is a specification.

My invention relates to improvements in heating-furnaces andattachments, for heating blanks for chain-rings, rings and such likearticles preparatory to welding or forging the same, the object being torapidly and uniformly heatl such blanks or articles to the degreerequired, and to render the construction of the furnace and attachmentssimple, durable and convenient.

With this obj ect in View, my invention consists in certain features ofconstruction and in combination of parts hereinafter described andpointed out in the claims.

In the accompanying drawings, Figure l is a top plan, of my improvedfurnace and attachments, a portion being broken away to more clearlyshow the construction. Fig. 2 is a front side elevation of the same,with the forward portion of lever M broken away. Fig. 3 is a frontelevation, partly in vertical section, on line 3-3 Fig. l. Fig. 4. is avertical section on line i-4., Figs. l and 2,1ooking in the direction ofthe arrow. Fig. 5 is a perspective in detailhereinafter described. Figv6 is a bottom plan of a portion of wheel H.

A represents the casing of the furnace that is preferably semi-circularor U-shaped as shown and mounted upon legs A.

B represents the combustion and heating chamber of the furnace that issemi-circular or U-shaped in plan as shown in Fig. 1, and locatedcentrally between the inner and outer sides of the U shaped furnacecasing as shown in Fig. 3.

C represents air-pipes or iiues that discharge into thecombustion-chamber at opposite ends of the latter, respectively.

D represents gas, oil or fuel-pipes that discharge centrally intoair-flues O such a distance from the discharging-end of the air-fluesthat the oil and air will commingle before being discharged into thecombustion-chamber of the furnace. The top wall of the furnacecasing,centrally of the heating-chamber is slotted, as at d, the slot extendingfrom end to end of the heating-chamber. Through said slot are suspendedthe blanks or articles,Bc, to be heated as will hereinafter more fullyappear. Slot a is of such width as to just accommodate the suspension ofthe blanks or articles to be heated, but the lower portion of said slotis gradually and downwardly enlarged in width, as at d', whichenlargement of the slot constitutes the top of the heatingchamber of thefurnace the object being to concentrate the heat at the point where theblanks or articles to be heated are suspended and to prevent the heatfrom blowing or shooting upwardly out of the furnace.

E represents a cross-bar that bridges the space between the opposinginner side-walls of the furnace-casing and is arranged preferablyparallel with the front side of the furnace, said cross-bar beingsupported preferably by means of angle-plates e secured to therespective ends of the cross-bar and to the adjacent side of thefurnace-casing.

G represents a vertical shaft that, at its lower end, has bearing in astep-box, g, and extends upwardly through a boss or supporting-bearingE', located centrally of and integral with cross-bar E. Operativelymounted on said shaft, above the cross-piece E, is a wheel, H.

I represents the holders or carriers from which the blanks or articlesto be heated are suspended. Holders I are arranged radially with theaxis of wheel I'I and at suitable preferably regular, intervals aboutthe lower side of the rim of said wheel. Holders or carriers I aresupported preferably by means of eyebolts I', the Shanks whereof extendupward through corresponding holes in the rim of said wheel and aresecured in place, respectively, by means of a nut, I2, mounted on theshank of the bolt above the rim of the wheel, holders or carriers Iextending through eyes I3 of the bolts. By tightening nuts I2, theholders are brought tightly against theunder side of the rim of wheel Hand thereby prevented from tilting in a vertical plane. The rim of wheelH is recessed or grooved transversely and radially with the axis of thewheel, as at h, (see Fig. 6) for receiving the holders or carriers,thereby preventing lateral displacement of said holders or carriers, andsaid wheel-rim, on its under side is preferably groovedcircumferentially, as at h (see Fig. 6 and dotted lines Fig. l) for thereception of the eyes of bolts I, to bring said eyes in proper positionrelative to recesses or grooves h. Holders I comprise preferably a rodor bar bent downwardly outside of the rim of wheel H, as at I4, saiddownwardly-extending member of the holders, at its lower end, withinslot a in the furnace-casing, terminating in a hook, I5, on which theblanks or articles to be heated are hung.

Wheel H is of such diameter relative to the semi-circular slot a in thetop of the furnace-casing that the rim of said wheel will not extendover said slot so as not to come in too close contact with the heatescaping from the furnace at said slot.

The top of the furnace-casing, at both ends of the heating chamber, atthe front of the furnace, is offset downward, as at CL2, for the passageof the blanks or articles into and out of the heating-chamber. Wheel His adapted to be slowly and continuously revolved by means hereinafterdescribed; the blanks or articles to be heated are hung upon holders orcarriers I at or before reaching the offset at the side of the furnacein the direction of which the holders or carriers travel, and areremoved at the downwardly offset portion at the opposite side of thefurnace.

Carrying-wheel II is preferably secured to the top of upright shaft G bymeans of a tapering tit, as at H', (see Fig. 3) whereby said wheel maybe readily removed and replaced,1 and always replaced in its trueposition rela-` tive to the shaft. Said shaft is driven by means of aworm-wheel K that meshes with a worm Z on driving-shaft L that extendsalong forward of the furnace and is supported by brackets L secured tothe furnacecasing.

form-wheel K is mounted upon shaft G preferably by the well known meansof groove and feather, but the groove, g5, is of such length as toaccommodate the endwise movement of said shaft effected by means of alever, M, that supports the step-box of said shaft and is fulcrumed, atits rear end, as at m, to the lower end of a bracket, m', depending fromand secured to the furnace-casing. Lever M, forward of the furnace, andwithin convenient reach of the operator, terminates in a handle, M', bymanipulating which up or down, vertical shaft G, and carrying-wheel Hand attached holders or carriers-I, will be elevated or lowered asrequired in adjusting the blanks or articles to be heated at the properelevation ordepth in the heating-chamber of the furnace.

Worm-wheel K, to prevent the same from moving with shaft G in theendwise movement of the latter, is confined between thesupporting-bearings, G', G2, of shaft G, said bearings being rigid orintegral with crossbars g and g2, that are rigidly connected with eachother, preferably by means of bolts g3, and also rigidly connected withthe furnacecasing, the latter preferably having inwardlyprojectingflanges a3, for supporting the upper cross-bar g and perforated for thepassage of the aforesaid securing-bolts g3.

Upright shaft G is preferably operatively connected with lever M asfollows Said lever is provided with a yoke between the sidemembers M2whereof the step-box of said shaft is supported preferably as shown bymeans of lateral pin g4, extending through the step-box and engagingslots m2 inthe aforesaid members of the yoke, and adapted to moveendwise of said slots in the operation of the lever.

Suitable means are provided for automatically disengaging or removingthe heated blanks or articles as rapidly as they pass from theheating-chamber of the furnace and causing the blanks or articles to bedeposited in a recess, pocket or receptable, P, at the delivering-end ofthe heating-chamber of the furnace at the respective downwardly-offsetportion of the top of the furnace-casing. The means referred to foreffecting the disengagement or removal of the heated blank or articlefrom its holder or carrier consists preferably of an angular block orplate, Q, secured to the top of the furnace-casing at the mouth ofpocket or receptacle P and in a plane just below the path of the holderor carrier, the working side Qof block or member Q being tangential oroblique to the path of the holder or carrier, and said block, plate ormember being located in such position relative to the path of the holderor carrier that the working-side Q of said block, plate or member willengage and effect the removal of the heated blank or article, from theholder or carrier, into the aforesaid pocket or receptaclewhence theblank or article is immediately removed in any suitable manner for thewelding or forging operation.

T (Fig. 4E) represents a tap-hole for drawing off cinders from thefurnace.

Vhat I claim isl. The combination Withafurnace havinga semi-circular orU-shaped heating chamber, the top wall whereof has a slot or opening forthe passage through the furnace of the blanks or articles to be heated,of a wheel adapted to rotate in a horizontal plane above the furnace,suitable means for operating said wheel, holders or carriers, from whichthe blanks or articles to be heated are suspended, secured at suitableintervals to the rim of said wheel, the arrangement of parts being suchthat said holders or carriers shall be adapted to convey the blanks orarticles to be heated through the heating-chamber of the furnace,substantially as set forth.

2. The combination with a semi-circular or U-shaped heating furnace, ofa wheeladapted to rotate in a horizontal plane, suitable means foroperating said wheel, holders or carriers from which the blanks orarticles to be heated are suspended, secured at suitable intervals to,and arranged radially with the IOO lIO

axis of, said wheel, the arrangement of parts being such that saidholders or carriers shall be adapted to convey the blanks or articles tobe heated through the heat of the furnace, substantially as set forth.

3. The combination with a heating-f urnace, provided with asemi-circular heating chamber having an opening in its top wall of awheel adapted to rotate in a horizontal plane, suitable means foroperating said wheel, holders or carriers, from which the blanks orarticles to be heated are suspended, arranged at suitable intervalsabout the rim of said wheel, and eye-bolts for securing said holders orcarriers to the wheel-rim, the arrangement of parts being such that, inoperation, the blanks or articles to be heated will be carried throughthe heat of the furnace, substantially as set forth.

4. The combination with a heating-furnace, provided with a semi-circularheating chamber having an opening in its top Wall of a wheel. adapted torotate in a horizontal plane, suitable means for operating said wheel,holders or carriers, from which the blanks or articles to be heated aresuspended arranged at suitable intervals about the rim of said Wheel,said wheel rim being recessed or grooved transversely and radially withthe Wheel-axis for receiving said holders or carriers, and suitablemeans for tightly holding said holders or carriers within said groovesor recesses, the arrangement of parts being such that, in operation, theblanks or articles to be heated will be carried through the heat of thefurnace, substantially as set forth.

5. The combination with a furnace having a semi-circular or U -shapedheating-chamber and a slot, as at a, in the top wall and extendinglengthwise of said heating-chamber, of a wheel adapted to rotate in ahorizontal plane above the furnace, suitable means for operating saidwheel, and holders or carriers, from which the blanks or articles to beheated are suspended, secured at suitable intervals to and arrangedradially with the axis of said wheel, the arrangement of parts beingsubstantially as indicated and the wheel having such a diameter relativeto the aforesaid slot that said Wheel does not extend over said slot,substantially as and for the purpose set forth.

6. The combination Wi th a furnace having a semi-circular or U -shapedheating-chamber, the top Wall whereof is slotted or open for thepassage, through the furnace, of the blanks or articles to be heated, ofa horizontally-rotating blank-holder carrying-wheel, a shaft forsupporting said wheel, a worm -Wheel operatively mounted on said shaft,a driving-shaft, and a worm on said driving-shaft and in mesh with theaforesaid worm-wheel, the location of the blank-holder carrying-wheel,relative to the opening in the top of the heating-chamber of thefurnace, being such that the blanks or articles to be heated, will becarried through the furnace, substantially as set forth.

7. The combination with a furnace having a semi-circular or U -s'hapedheating-chamber, the top wall whereof is slotted or open for thepassage, through the furnace, of the blanks or articles to be heated, ofholders for the blanks a horizontally-rotating blank-holdercarrying-Wheel, a shaft for operatively supportingsaid wheel, thearrangement of parts being substantially as described, suitable meansfor rotating said shaft, and suitable means for elevating and loweringthe blankholder carrying-wheel, substantially as and for the purpose setforth.

8. The combination with a furnace having a semi-circular or U -shapedheating-chamber, the top wall whereof is slotted or open for thepassage, through the furnace, of the blanks or articles to be heated, ofa vertical-shaft having a groove, g5, a blank-holder carrying-Wheeloperatively supported on the upper end of said shaft, a worm-wheel onsaid shaft and having a feather or key engaging said groove, the latterbeing of sufficient length to accommodate the movement of the shaft in avertical plane, a horizontal driving-shaft, a worm on saiddriving-shaftin mesh with the aforesaid worm-wheel, a lever operativelyconnected with the lower end of the aforesaid upright shaft forelevating and lowering the same, and means substantially as indicatedfor preventing said worm-wheel from moving up and down with said uprightshaft, the arrangement of parts being substantially as shown anddescribed.

9. The combination with a heating-furnace and traveling holders orcarriers for conveying the blanks or articles to be heated through saidfurnace, of a block, plate or member at the delivering-end of thefurnace, said block, plate or member being arranged with one of itssides at an angle or Obliquity to the path of, and in such positionrelative to, the heated blanks or articles, that the side specified ofsaid block, plate or member will engage and cause the removal, from theholders or carriers, of the heated blanks or articles, substantially asset forth.

10. The combination with a heating furnace and a holder or carrier forconveying the blank or article to be heated through said furnace, of apocket or receptacle at the delivering-end of the furnace, and anangular block, plate or member located at the mouth of said pocket orreceptacle, the arrangement and location of said block, plate or memberand the aforesaid pocket or receptacle being such relative to the pathof the holder or carrier that the heated blank or article shall beengaged by said angular block, plate or member and removed, from theholder or carrier, into the aforesaid pocket or receptacle,substantially as set forth.

PHILANDER H. STANDISH.

Witnesses:

CHAs. F. BULLooK, FRANK KONLEY.

